The acceptance of the challenge by David, best known as the co-creator of "Seinfeld" and "Curb Your Enthusiasm," added some much-needed cred to a startup known as CharityBribes.org. The site has a very simple, but creative concept: come up with a challenge for a celeb, raise money as bait, and then donate that cash if the celebrity follows through within 30 days.

David, 64, was the first target for the site — which amassed $10,163 from 103 "bribers."

"Thank you to all the bribers for your generous contributions," the site's blog announced. "The total amount of $10,163 will soon be donated to the NRDC. We’ll keep you updated. And, of course, thanks to Larry David for taking the bribe and making our track-record of extortion a perfect 1-for-1."

Next for Charity Bribes? Getting Conan O'Brien to interview a guest on his show "wearing an eye patch & black turtleneck while holding a pipe." If asked why he appears that way, Conan is supposed to answer only with, "I don't want to talk about it."